pub async fn list_all_databases_for_user(
    unix_user: &UnixUser,
    connection: &mut MySqlConnection,
    _db_is_mariadb: bool,
    group_denylist: &GroupDenylist,
) -> ListAllDatabasesResponse {
    let result = sqlx::query_as::<_, DatabaseRow>(
        r"
          SELECT
            CAST(`information_schema`.`SCHEMATA`.`SCHEMA_NAME` AS CHAR(64)) AS `database`,
            GROUP_CONCAT(DISTINCT CAST(`information_schema`.`TABLES`.`TABLE_NAME` AS CHAR(64)) SEPARATOR ',') AS `tables`,
            GROUP_CONCAT(DISTINCT CAST(`mysql`.`db`.`User` AS CHAR(64)) SEPARATOR ',') AS `users`,
            MAX(`information_schema`.`SCHEMATA`.`DEFAULT_COLLATION_NAME`) AS `collation`,
            MAX(`information_schema`.`SCHEMATA`.`DEFAULT_CHARACTER_SET_NAME`) AS `character_set`,
            CAST(IFNULL(
              SUM(`information_schema`.`TABLES`.`DATA_LENGTH` + `information_schema`.`TABLES`.`INDEX_LENGTH`),
              0
            ) AS UNSIGNED INTEGER) AS `size_bytes`
          FROM `information_schema`.`SCHEMATA`
          LEFT OUTER JOIN `information_schema`.`TABLES`
            ON `information_schema`.`SCHEMATA`.`SCHEMA_NAME` = `TABLES`.`TABLE_SCHEMA`
          LEFT OUTER JOIN `mysql`.`db`
            ON `information_schema`.`SCHEMATA`.`SCHEMA_NAME` = `mysql`.`db`.`DB`
          WHERE `information_schema`.`SCHEMATA`.`SCHEMA_NAME` NOT IN ('information_schema', 'performance_schema', 'mysql', 'sys')
            AND `information_schema`.`SCHEMATA`.`SCHEMA_NAME` REGEXP ?
          GROUP BY `information_schema`.`SCHEMATA`.`SCHEMA_NAME`
        ",
    )
    .bind(create_user_group_matching_regex(unix_user, group_denylist))
    .fetch_all(connection)
    .await
    .map_err(|err| ListAllDatabasesError::MySqlError(err.to_string()));